You are using kexts for an Intel card to get a Broadcom WiFi/BT card working?
That is not going to happen, unless you have 2 x WiFi/BT cards installed in your system and have activated the Intel card thinking you are fixing the Broadcom card.
From what I have read regarding the BCM4350 card you need to set the following:
Key = pci-aspm-default | Value = 0 | Type = NUMBER, under the cards ACPI path in the DeviceProperties section of the config.plist, for the card to work in recent versions of macOS, i.e. High Sierra or newer.
As the AirPortBrcm4360.kext was dropped with the release of Big Sur, it is now necessary to use the ASPM fix above plus faking the device-id of a card that is still supported in Big Sur and newer, i.e. pci14e4,43a0, Broadcom BCM4360 being the logical device ID to use.